What's up with the IP stack?

[Soren Schmidt]

It seems Josef Karthauser wrote:
> I've just built and installed a new kernel, the first since Aug 6th.
> There appears to be a problem with the IP stack.  What happens is that
> everything is fine for a few hours, and then the IP stack stops working.
> I can no longer ping anything on the local network, my default route
> drops out (which is probably dhclient's doing).  Perhaps it is ARP that
> is broken, it's hard to tell.  All I know is that I need to reboot to
> make it work again.
> 
> Is anyone else experiencing this kind of problem?

Do you have dummynet included in the kernel ? 
That has been broken for me since sam's latest commit as a backout
of ip_dummynet.c fixes the problem for me...

-Søren